Nissan Versa (N17): P1148 closed loop control

Nissan Versa 2nd generation (N17) Service Manual / Engine / Engine control system (EC) / P1148 closed loop control

DTC Logic

DTC DETECTION LOGIC

NOTE: DTC P1148 is displayed with DTC for A/F sensor 1.

When the DTC is detected, perform the trouble diagnosis of DTC corresponding to A/F sensor 1.

DTC No.	Trouble diagnosis (Trouble diagnosis content)	DTC detecting condition	Possible cause
P1148	CLOSED LOOP-B1 (Closed loop control function)	The closed loop control function does not operate even when vehicle is being driven in the specified condition.	Harness or connectors (A/F sensor 1 circuit is open or shorted.) A/F sensor 1 A/F sensor 1 heater

Diagnosis Procedure

DTC P1148 is displayed with DTC for A/F sensor 1.

When the DTC is detected, perform the trouble diagnosis of DTC corresponding to A/F sensor 1.

Refer to EC, "DTC Index".

P1078 EVT control position sensor

P117A air fuel ratio

Other materials:

Engine compartment check locations
HR16DE Engine 1. Drive belt location 2. Engine oil filler cap 3. Air cleaner 4. Brake and clutch (if so equipped) fluid reservoir 5. Fusible link 6. Battery 7. Engine coolant reservoir 8. Radiator cap 9. Engine oil dipstick 10. Windshield-washer fluid reservoir Refer to the page numb ...

Basic inspection
Work Procedure 1.INSPECTION START 1. Check service records for any recent repairs that may indicate a related malfunction, or a current need for scheduled maintenance. 2. Open engine hood and check the following: Harness con ...

Nissan Versa (N17): P1148 closed loop control

P1078 EVT control position sensor

P117A air fuel ratio

Other materials:

Categories